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<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="panel-group" id="accordion">
<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseOne"><span class="glyphicon glyphicon-file">
</span>POST NEW ARTICLE</a>
</h4>
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<div id="collapseOne" class="panel-collapse collapse in">
<div class="panel-body">
<h3>panel1</h3>
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<div class="panel panel-default">
<div class="panel-heading">
<h4 class="panel-title">
<a data-toggle="collapse" data-parent="#accordion" href="#collapseTwo"><span class="glyphicon glyphicon-th-list">
</span>META DATA</a>
</h4>
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<div id="collapseTwo" class="panel-collapse collapse">
<div class="panel-body">
<h3>Panel2</h3>
</div>
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